12505741917 has 16 divisors (see below), whose sum is σ = 17556957120. Its totient is φ = 7896096000.

The previous prime is 12505741903. The next prime is 12505741921. The reversal of 12505741917 is 71914750521.

It is not a de Polignac number, because 12505741917 - 2¹⁰ = 12505740893 is a prime.

It is a super-2 number, since 2×12505741917² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12505741967) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 181317 + ... + 240597.

It is an arithmetic number, because the mean of its divisors is an integer number (1097309820).

Almost surely, 2^12505741917 is an apocalyptic number.

It is an amenable number.

12505741917 is a deficient number, since it is larger than the sum of its proper divisors (5051215203).

12505741917 is a wasteful number, since it uses less digits than its factorization.

12505741917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63004.

The product of its (nonzero) digits is 88200, while the sum is 42.

The spelling of 12505741917 in words is "twelve billion, five hundred five million, seven hundred forty-one thousand, nine hundred seventeen".